26221849 has 2 divisors, whose sum is σ = 26221850. Its totient is φ = 26221848.

The previous prime is 26221847. The next prime is 26221861. The reversal of 26221849 is 94812262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19642624 + 6579225 = 4432^2 + 2565^2 .

It is a cyclic number.

It is not a de Polignac number, because 26221849 - 2¹ = 26221847 is a prime.

Together with 26221847, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (26221841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13110924 + 13110925.

It is an arithmetic number, because the mean of its divisors is an integer number (13110925).

Almost surely, 2^26221849 is an apocalyptic number.

It is an amenable number.

26221849 is a deficient number, since it is larger than the sum of its proper divisors (1).

26221849 is an equidigital number, since it uses as much as digits as its factorization.

26221849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 34.

The square root of 26221849 is about 5120.7273897367. The cubic root of 26221849 is about 297.0898200524.

The spelling of 26221849 in words is "twenty-six million, two hundred twenty-one thousand, eight hundred forty-nine".